Needle size matters because it decides which layer of tissue the B12 reaches, how comfortable the injection is, and how cleanly it goes in
Injections deliver B12 directly into your system for immediate use, making them a highly effective solution
Happy Hormones MD
The severity of these effects depends on the dose and duration of treatment
GHK-Cu (skin, hair, inflammation) Article: GHK-Cu studied for skin, hair and healing GHK-Cu is a naturally occurring copper-binding peptide discovered in human plasma that activates thousands of genes involved in healing, reducing inflammation, and protecting against oxidative stress
But this does not mean that all the B12 contained in the tablet will be absorbed, as it also depends on how much intrinsic factor is available for its absorption